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wasp traps to catch them before they do any damage. Otherwise, there is little that can be done.Nearby wasp nests can be eliminated by calling in professional pest control companies, or if the infestation is small enough, tackle it yourself with an over

can be eliminated by calling in professional pest control companies, or if the nest is small enough, by using a proprietory product from any hardware store.fruit trees and busheslate-summer to autumnMore common garden pestsSlugsAphidsEarwigsMealybugs

the problem long-term but deals with the aphids in the short-term.Spray the tree with thiacloprid the moment you spot any aphids. Small numbers are far more easily tackled than large, rapidly multiplying infestations.apples, crab apples, cotoneaster, hawthorn

The problem looks worse than it is. Miniscule mites secrete chemicals that cause blistering or blotches on the new leaves, which gradually turn blackish-brown. Although the mites breed prolifically, producing several generations over summer

When apple trees are in flower, the sawfly, Hoplocampa testudinea, lays its eggs in the developing fruit. In June, the larvae tunnel their way under the skin of the fruit and into the core, causing the apples to fall. When they're ready, they tunnel

The adult codling moths lay their eggs on or near developing fruit. These eggs hatch into small white caterpillars, which eat their way into the fruit and feed inside while it's developing. The caterpillars may be found inside the fruit at harvest

the emerging aphids. Don't wait for the symptoms to appear, as there's no point in spraying once the leaves have become puckered.blackcurrants, redcurrants, whitecurrants early to mid-winter, springCommon garden pests affecting fruit treesWolly aphids on apple

into the plant and can be present in concentrated forms in the nectar and pollen of flowers. If you do use these chemicals, remove any flowers before they open, as they will also kill any bees that visit them.mint, pennyroyalMay-SeptemberMore pests of herbs

, which can encourage sooty mould to develop. It's more of a problem in urban areas where temperatures are higher.Scrape the eggs off by hand and move them to an alternative tree, or destroy them.Spray with an insecticide containing imidaclprid

, sugary substance (called honeydew) which encourages the growth of a fungus called sooty mould. Early summer is the best time to tackle the problem, when the newly hatched insects are crawling around looking for a place to feed and settle